Why We Lie
Predictably Irrational
By Dan Ariely
May 29, 2012
Not
too long ago, one of my students, named Peter, told me a story that
captures rather nicely our society’s misguided efforts to deal with
dishonesty. One day, Peter locked himself out of his house. After a
spell, the locksmith pulled up in his truck and picked the lock in about
a minute.
“I
was amazed at how quickly and easily this guy was able to open the
door,” Peter said. The locksmith told him that locks are on doors only
to keep honest people honest. One percent of people will always be
honest and never steal. Another 1% will always be dishonest and always
try to pick your lock and steal your television; locks won’t do much to
protect you from the hardened thieves, who can get into your house if
they really want to. The purpose of locks, the locksmith said, is to
protect you from the 98% of mostly honest people who might be tempted to
try your door if it had no lock.
We
tend to think that people are either honest or dishonest. In the age of
Bernie Madoff and Mark McGwire, James Frey and John Edwards, we like to
believe that most people are virtuous, but a few bad apples spoil the
bunch. If this were true, society might easily remedy its problems with
cheating and dishonesty. Human-resources departments could screen for
cheaters when hiring. Dishonest financial advisers or building
contractors could be flagged quickly and shunned. Cheaters in sports and
other arenas would be easy to spot before they rose to the tops of
their professions.
But
that is not how dishonesty works. Over the past decade or so, my
colleagues and I have taken a close look at why people cheat, using a
variety of experiments and looking at a panoply of unique data sets—from
insurance claims to employment histories to the treatment records of
doctors and dentists. What we have found, in a nutshell: Everybody has
the capacity to be dishonest, and almost everybody cheats—just by a
little. Except for a few outliers at the top and bottom, the behavior of
almost everyone is driven by two opposing motivations. On the one hand,
we want to benefit from cheating and get as much money and glory as
possible; on the other hand, we want to view ourselves as honest,
honorable people. Sadly, it is this kind of small-scale mass cheating,
not the high-profile cases, that is most corrosive to society.
Much
of what we have learned about the causes of dishonesty comes from a
simple little experiment that we call the “matrix task,” which we have
been using in many variations. It has shown rather conclusively that
cheating does not correspond to the traditional, rational model of human
behavior—that is, the idea that people simply weigh the benefits (say,
money) against the costs (the possibility of getting caught and
punished) and act accordingly.
The
basic matrix task goes as follows: Test subjects (usually college
students) are given a sheet of paper containing a series of 20 different
matrices (structured like the example you can see above) and are told
to find in each of the matrices two numbers that add up to 10. They have
five minutes to solve as many of the matrices as possible, and they get
paid based on how many they solve correctly. When we want to make it
possible for subjects to cheat on the matrix task, we introduce what we
call the “shredder condition.” The subjects are told to count their
correct answers on their own and then put their work sheets through a
paper shredder at the back of the room. They then tell us how many
matrices they solved correctly and get paid accordingly.
What
happens when we put people through the control condition and the
shredder condition and then compare their scores? In the control
condition, it turns out that most people can solve about four matrices
in five minutes. But in the shredder condition, something funny happens:
Everyone suddenly and miraculously gets a little smarter. Participants
in the shredder condition claim to solve an average of six matrices—two
more than in the control condition. This overall increase results not
from a few individuals who claim to solve a lot more matrices but from
lots of people who cheat just by a little.
Would
putting more money on the line make people cheat more? We tried varying
the amount that we paid for a solved matrix, from 50 cents to $10, but
more money did not lead to more cheating. In fact, the amount of
cheating was slightly lower when we promised our participants the
highest amount for each correct answer. (Why? I suspect that at $10 per
solved matrix, it was harder for participants to cheat and still feel
good about their own sense of integrity.)
Would
a higher probability of getting caught cause people to cheat less? We
tried conditions for the experiment in which people shredded only half
their answer sheet, in which they paid themselves money from a bowl in
the hallway, even one in which a noticeably blind research assistant
administered the experiment. Once again, lots of people cheated, though
just by a bit. But the level of cheating was unaffected by the
probability of getting caught.
Knowing that most people cheat—but just by a little—the next logical question is what makes us cheat more or less.
One
thing that increased cheating in our experiments was making the
prospect of a monetary payoff more “distant,” in psychological terms. In
one variation of the matrix task, we tempted students to cheat for
tokens (which would immediately be traded in for cash). Subjects in this
token condition cheated twice as much as those lying directly for
money.
Another
thing that boosted cheating: Having another student in the room who was
clearly cheating. In this version of the matrix task, we had an acting
student named David get up about a minute into the experiment (the
participants in the study didn’t know he was an actor) and implausibly
claim that he had solved all the matrices. Watching this mini-Madoff
clearly cheat—and waltz away with a wad of cash—the remaining students
claimed they had solved double the number of matrices as the control
group. Cheating, it seems, is infectious.
Other
factors that increased the dishonesty of our test subjects included
knowingly wearing knockoff fashions, being drained from the demands of a
mentally difficult task and thinking that “teammates” would benefit
from one’s cheating in a group version of the matrix task. These factors
have little to do with cost-benefit analysis and everything to do with
the balancing act that we are constantly performing in our heads. If I
am already wearing fake Gucci sunglasses, then maybe I am more
comfortable pushing some other ethical limits (we call this the “What
the hell” effect). If I am mentally depleted from sticking to a tough
diet, how can you expect me to be scrupulously honest? (It’s a lot of
effort!) If it is my teammates who benefit from my fudging the numbers,
surely that makes me a virtuous person!
The
results of these experiments should leave you wondering about the ways
that we currently try to keep people honest. Does the prospect of heavy
fines or increased enforcement really make someone less likely to cheat
on their taxes, to fill out a fraudulent insurance claim, to recommend a
bum investment or to steal from his or her company? It may have a small
effect on our behavior, but it is probably going to be of little
consequence when it comes up against the brute psychological force of
“I’m only fudging a little” or “Everyone does it” or “It’s for a greater
good.”
What, then—if anything—pushes people toward greater honesty?
There’s
a joke about a man who loses his bike outside his synagogue and goes to
his rabbi for advice. “Next week come to services, sit in the front
row,” the rabbi tells the man, “and when we recite the Ten Commandments,
turn around and look at the people behind you. When we get to ‘Thou
shalt not steal,’ see who can’t look you in the eyes. That’s your guy.”
After the next service, the rabbi is curious to learn whether his advice
panned out. “So, did it work?” he asks the man. “Like a charm,” the man
answers. “The moment we got to ‘Thou shalt not commit adultery,’ I
remembered where I left my bike.”
What
this little joke suggests is that simply being reminded of moral codes
has a significant effect on how we view our own behavior.
Inspired
by the thought, my colleagues and I ran an experiment at the University
of California, Los Angeles. We took a group of 450 participants, split
them into two groups and set them loose on our usual matrix task. We
asked half of them to recall the Ten Commandments and the other half to
recall 10 books that they had read in high school. Among the group who
recalled the 10 books, we saw the typical widespread but moderate
cheating. But in the group that was asked to recall the Ten
Commandments, we observed no cheating whatsoever. We reran the
experiment, reminding students of their schools’ honor codes instead of
the Ten Commandments, and we got the same result. We even reran the
experiment on a group of self-declared atheists, asking them to swear on
a Bible, and got the same no-cheating results yet again.
This
experiment has obvious implications for the real world. While ethics
lectures and training seem to have little to no effect on people,
reminders of morality—right at the point where people are making a
decision—appear to have an outsize effect on behavior.
Another
set of our experiments, conducted with mock tax forms, convinced us
that it would be better to have people put their signature at the top of
the forms (before they filled in false information) rather than at the
bottom (after the lying was done). Unable to get the IRS to give our
theory a go in the real world, we tested it out with
automobile-insurance forms. An insurance company gave us 20,000 forms
with which to play. For half of them, we kept the usual arrangement,
with the signature line at the bottom of the page along with the
statement: “I promise that the information I am providing is true.” For
the other half, we moved the statement and signature line to the top. We
mailed the forms to 20,000 customers, and when we got the forms back,
we compared the amount of driving reported on the two types of forms.
People
filling out such forms have an incentive to underreport how many miles
they drive, so as to be charged a lower premium. What did we find? Those
who signed the form at the top said, on average, that they had driven
26,100 miles, while those who signed at the bottom said, on average,
that they had driven 23,700 miles—a difference of about 2,400 miles. We
don’t know, of course, how much those who signed at the top really
drove, so we don’t know if they were perfectly honest—but we do know
that they cheated a good deal less than our control group.
Such
tricks aren’t going to save us from the next big Ponzi scheme or doping
athlete or thieving politician. But they could rein in the vast
majority of people who cheat “just by a little.” Across all of our
experiments, we have tested thousands of people, and from time to time,
we did see aggressive cheaters who kept as much money as possible. In
the matrix experiments, for example, we have never seen anyone claim to
solve 18 or 19 out of the 20 matrices. But once in a while, a
participant claimed to have solved all 20. Fortunately, we did not
encounter many of these people, and because they seemed to be the
exception and not the rule, we lost only a few hundred dollars to these
big cheaters. At the same time, we had thousands and thousands of
participants who cheated by “just” a few matrices, but because there
were so many of them, we lost thousands and thousands of dollars to
them.
In
short, very few people steal to a maximal degree, but many good people
cheat just a little here and there. We fib to round up our billable
hours, claim higher losses on our insurance claims, recommend
unnecessary treatments and so on.
Companies
also find many ways to game the system just a little. Think about
credit-card companies that raise interest rates ever so slightly for no
apparent reason and invent all kinds of hidden fees and penalties (which
are often referred to, within companies, as “revenue enhancements”).
Think about banks that slow down check processing so that they can hold
on to our money for an extra day or two or charge exorbitant fees for
overdraft protection and for using ATMs.
All
of this means that, although it is obviously important to pay attention
to flagrant misbehaviors, it is probably even more important to
discourage the small and more ubiquitous forms of dishonesty—the
misbehavior that affects all of us, as both perpetrators and victims.
This is especially true given what we know about the contagious nature
of cheating and the way that small transgressions can grease the
psychological skids to larger ones.
We want to install locks to stop the next Bernie Madoff, the next Enron, the next steroid-enhanced all-star, the next serial plagiarist, the next self-dealing political miscreant. But locking our doors against the dishonest monsters will not keep them out; they will always cheat their way in. It is the woman down the hallway—the sweet one who could not even carry away your flat-screen TV if she wanted to—who needs to be reminded constantly that, even if the door is open, she cannot just walk in and “borrow” a cup of sugar without asking.
(c) Predictably Irrational

